AIR BRAKES CDL PRACTICE TEST - TEXAS
View instructions
The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the Texas CDL knowledge test. The TX CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the Texas CDL Manual. Take this TX CDL practice test now to prepare for the actual air brakes test!
1.
Stepping on and off the brake pedal several times:
|
may cause air leaks.
|
|
|
reduces the air pressure in the tanks.
|
|
|
may result in dangerously thin linings.
|
|
|
All of the above.
|
2.
Older trailers do not have spring brakes. If the air supply leaks away:
|
the ABS won't work properly.
|
|
|
the trailer will stop normally.
|
|
|
there will be no emergency brakes.
|
|
|
All of the above.
|
3.
Before driving a vehicle with a dual air system, the air compressor should build up a minimum of _____ pressure in both the primary and secondary systems.
|
75 psi
|
|
|
10 psi
|
|
|
50 psi
|
|
|
100 psi
|
4.
Trailers built on or after March 1, 1998 are required to be equipped with anti-lock brakes. These trailers will have:
|
yellow malfunction lamps on the left side.
|
|
|
red malfunction lamps on the left side.
|
|
|
blue malfunction lamps on the right side.
|
|
|
yellow malfunction lamps on the right side.
|
5.
Pressing and releasing the brake pedal unnecessarily can:
|
causes friction, which slows the vehicle.
|
|
|
apply more air pressure.
|
|
|
let air out faster than the compressor can replace it.
|
|
|
causes all the air to be lost.
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More